Network commands like ifconfig and route are still popular with users even though they are far past their prime. Their successor, ip, provides the capabilities of several legacy tools with a single, unified syntax.

Go comes with an image-processing toolkit right out of the box. In this month's column, Mike Schilli explains how to walk through a photo's pixels to detect the foreground by comparing values against a threshold and shows how to manipulate the original by creating a nice looking silhouette.